Evaluation of the LightCycler^® PRO Instrument as a Platform for Rhesus D Typing

Area of Science:

• Transfusion Medicine
• Molecular Diagnostics
• Genetics

Background:

• Reliable Rhesus D (RhD) typing is critical for blood donation centers and transfusion safety.
• Conventional serological methods can be insufficient for RhD typing in cases of massive transfusion or weakened antigen expression.
• DNA-based phenotype prediction is essential for accurate RhD determination in complex clinical scenarios.

Purpose of the Study:

• To evaluate the accuracy and reliability of a molecular RHD typing approach.
• To assess the performance of real-time PCR and Sanger sequencing for identifying common aberrant RHD variants.
• To determine the utility of the LightCycler® PRO real-time platform for RHD typing.

Main Methods:

• Real-time PCR was employed to detect common aberrant RHD types (RHD*01W.1, RHD*01W.2, RHD*01W.3, and RHD*07.01).
• Sanger sequencing of RHD coding regions was performed for PCR-negative samples to ensure comprehensive analysis.
• The LightCycler® PRO real-time platform was utilized for method evaluation.

Main Results:

• The molecular RHD typing approach demonstrated remarkable accuracy in specificity and performance.
• The LightCycler® PRO platform facilitated efficient data interpretation and integration through its HL7 interface.
• All tested molecular methods provided reliable RHD phenotype predictions.

Conclusions:

• Advanced molecular techniques, including real-time PCR and Sanger sequencing, are crucial for accurate RHD typing.
• The LightCycler® PRO platform offers advantages for molecular blood typing, enhancing data management.
• Integrating molecular methods into blood typing protocols is essential for transfusion safety, particularly in challenging cases.